A totipotent cell:
a. is fixed into a single developmental pathway.
b. has homeotic transformation.
c. can differentiate into any adult cell.
d. will become a stem cell.
C
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Progymnosperms had two derived features:a
microphylls and herbaceous tissue. b. microphylls and woody tissue. c. megaphylls and herbaceous tissue. d. megaphylls and woody tissue. e. both megaphylls and microphylls and herbaceous tissue.
When light strikes a rod cell, rhodopsin:a
breaks down into opsin and retinal. b. changes color. c. acts as a second messenger. d. depolarizes the cell membrane. e. stimulates a cone cell.
Some invertebrates do not have special respiratory
organs and rely on __________ exchange, diffusion of gases across the body surface. Fill in the blank(s) with the appropriate word(s).
With each turn of the Krebs cycle, ____
a. the majority of ATP are produced b. oxygen is produced c. carbon dioxide is utilized d. NADH and FADH2 are produced e. pyruvate is produced